Prolog or prologue?
prolog is a noun meaning “Uncommon spelling of prologue”; prologue is a noun meaning “A speech or section used as an introduction, especially to a play or novel”. Wiktionary gives them as spellings of the same word. In written English (wordfreq, 2021 data) prologue is about 7.8 times as common as prolog.
What is the difference between prolog and prologue?
| prolog | prologue | |
|---|---|---|
| Part of speech | noun, verb | noun, verb |
| Meaning | USUncommon spelling of prologue | A speech or section used as an introduction, especially to a play or novel One who delivers a prologue To introduce with a formal preface, or prologue |
| Example | none recorded | none recorded |
| Forms | prologs | prologues |
| Pronunciation | not recorded | /ˈpɹəʊlɒɡ/ /ˈpɹoʊlɔɡ/ /ˈpɹoʊlɑɡ/ |
| In writing | about once in every 5 million words | 1.7 times per million words |
Sources: prolog and prologue in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Every current meaning of prolog and prologue
prolog
- 1
USUncommon spelling of prologue
- 2
USUncommon spelling of prologue
prologue
- 1
A speech or section used as an introduction, especially to a play or novel
- 2
To introduce with a formal preface, or prologue
- 3
One who delivers a prologue
- 4
A component of a computer program that prepares the computer to execute a routine
- 5
An individual time trial before a stage race, used to determine which rider wears the leader's jersey on the first stage
- 6
A liturgical book containing daily readings, including hagiography
Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.
Which is more common, prolog or prologue?
prolog appears about once in every 5 million words; prologue 1.7 times per million words.
prolog about once in every 5 million wordsprologue 1.7 times per million words
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How many people search prolog vs prologue?
“prolog vs prologue” is searched about 30 times a month on Google and 10 on Bing in the United States. Google counts close variants of a query together (“prologue vs prolog”, “prolog or prologue”).
Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.